Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/11/2026, 04:49

General

  • Target
    myfiles-setup-0.2.3-amd64.exe
  • Size 4.7MB
  • Sample261113-ff2jlsgs5k
  • SHA256 597955f9905c34b066ca61a747e1642afd8ffd099a96565f59c7c1d574e79945
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 16 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\myfiles-setup-0.2.3-amd64.exe
    "C:\Users\Admin\AppData\Local\Temp\myfiles-setup-0.2.3-amd64.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\Sysnative\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -NonInteractive -ExecutionPolicy Bypass -Command "& ([scriptblock]::Create([IO.File]::ReadAllText($env:MYGO_APP_SCRIPT)))"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2772
    • C:\Users\Admin\AppData\Local\Programs\MyFiles\MyFiles.exe
      "C:\Users\Admin\AppData\Local\Programs\MyFiles\MyFiles.exe"
      2⤵
      • Executes dropped EXE
      • Modifies trusted root certificate store through registry
      • Reads the TCP/IP host and domain name from the registry
      • Modifies registry class
      • Modifies system certificate store
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:1472

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        .mygo-files

        • Path C:\Users\Admin\AppData\Local\Programs\MyFiles\.mygo-files
        • Size 12B
        • SHA256 6ec546c102acba4b8adaf3fff852314eeb34638a284b67a59a3ca593d6c00d43
        • MD5 SHA1 SHA512

        MyFiles.exe

        • Path C:\Users\Admin\AppData\Local\Programs\MyFiles\MyFiles.exe
        • Size 14.4MB
        • SHA256 f01734a14d8c48adae8b68c19da7f0c68390453a02d55159c0e82030f685aca5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MyFiles.exe

        • Path C:\Users\Admin\AppData\Local\Programs\MyFiles\MyFiles.exe
        • Size 15.9MB
        • SHA256 1fcb77b53f74aa20c8c5f825ce306b2e5feabc80b3e55d5a3a6deaeb3fed2269
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_cwtptiue.xfv.psm1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cwtptiue.xfv.psm1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsa528.tmp\System.dll
        • Size 12KB
        • SHA256 afe032f942e2ed0bf7494ec08ba813f5739fb522c640bde81d30ecaf9f894432
        • MD5 SHA1 SHA512 SSDEEP TLSH

        close-app.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\nsa528.tmp\close-app.ps1
        • Size 1KB
        • SHA256 46fe8dad86835a192b4bc1eff978c77596c6066487b6817cb55d0f47ccf0a762
        • MD5 SHA1 SHA512 TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsa528.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 9c76f4d53ceee2a471c936e0899688405e1009ce962d140e9acb49ed68d114cb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsa528.tmp\nsExec.dll
        • Size 7KB
        • SHA256 1dee37f6abb2dec9e767bd022d29386b6b295bbd55bf316d2649b8d298f89e9d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        session.json.tmp

        • Path C:\Users\Admin\AppData\Roaming\MyFiles\session.json.tmp
        • Size 280B
        • SHA256 fd8437f8d545a4bdb793cbcecfb967ee061ec1403a7699cd08b418f16c1a4843
        • MD5 SHA1 SHA512 TLSH

        memory/1472-105-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-99-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-96-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-95-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-94-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-93-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-92-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-103-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-104-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-106-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-107-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/1472-108-0x00007FF7C5BA0000-0x00007FF7C8A68000-memory.dmp

        memory/2772-20-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-34-0x00000225576F9000-0x00000225576FF000-memory.dmp

        memory/2772-33-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-31-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-29-0x0000022571B00000-0x0000022571B2A000-memory.dmp

        memory/2772-30-0x0000022571B00000-0x0000022571B24000-memory.dmp

        memory/2772-28-0x00000225716A0000-0x00000225716AA000-memory.dmp

        memory/2772-91-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-26-0x0000022571680000-0x000002257169E000-memory.dmp

        memory/2772-27-0x00000225718F0000-0x00000225719A2000-memory.dmp

        memory/2772-23-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-22-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-21-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-19-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-17-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-16-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-15-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-14-0x00000225715E0000-0x0000022571602000-memory.dmp

        memory/2772-11-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

        memory/2772-10-0x00007FF866A6F000-0x00007FF866A70000-memory.dmp